Lamp.



No. 806,879. PATENTED DEC. 12, 1905. B. G. EVERETT.

LAMP.

I APPLICATION FILED APR. 6, 1905.

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UNITED STAZES PATENT OFFICE.

ERNEST CAMERON EVERETT, OF NEW YORK, N. Y., ASSIGNOR TO R. E. DIETZ COMPANY, OF NEW YORK, N. Y.

LAMP.

Specification of Letters Patent.

Patented Dec. 12, 1905.

To aZZ whom, it 111 my concern:

Be it known that I, ERNEST CAMERON EVERETT, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Improvement in Lamps, of which the following is a specification.

This invention relates mainly to that class of lamps which are used as headlights for vehicles-for instance, automobiles-and has for its object to improve the construction of the dome or top of the lamp with a View of providing ample ventilation, while preventing injurious action on the flame by the violent air-currents to which the lamp is exposed when the vehicle is in rapid motion.

In the accompanying drawings, Figure 1 is a side elevation of a gas-lamp or headlight for automobiles provided with my improvement. Fig. 2 is a front elevation thereof. Fig. 3 is a top plan View, partly in horizontal section, taken in line 3 3, Fig. 1. Fig. 4 is a longitudinal sectional elevation of the top portion of the lamp. Fig. 5 is a vertical crosssection in line 5 5, Fig. 4.

Like letters of reference refer to like parts in the several figures.

A represents the body of the lamp, which is preferably cylindrical in shape, with the axis of the cylinder arranged horizontally. B represents the hingedfront frame; 6, the glass therein; 0, the hinged back plate; D, the gasburner, and E the reflector. All of these parts may be of any suitable construction.

The upper portion of the body A is provided over the burner with the usual exitopening a for the escape of the products of combustion and heated air.

F represents the top or dome which surmounts the exit-opening and protects the same. This top consists of a curved top plate f, following approximately the curvature of the body, an upright transverse front-wall g, provided with air-inlet openings [6, upright longitudinal side walls '5, provided with airoutlet openings Z4, and an upright transverse rear wall Z, which closes the rear end of the top, which checks rearward currents. This top structure is somewhat larger horizontally I than the exit-opening a in the top of the body, so that the four upright walls of the top or dome join the body at a distance from the edges of this opening, which is preferably four-sided, as shown. The outlet-openingslr in the side walls of the top have preferably the form of upright slots and are protected by external deflectors m, which project from the front edge of the openings rearwardly and outwardly, so as to deflect rearwardlyflowing external air-currents away from these openings, thereby causing an exhausting action outwardly through these openings. These deflectors are preferably formed integrally with the side walls by cutting the rear edge of each opening in the metal of the wall and bending the metal outwardly.

n represents a deflector which is arranged within the top or dome upon the body A, between the front wall g of the top and the exitopening a in the upper portion of the body. The deflector is V-shaped and arranged with its apex forwardly or, in other words, diverges rearwardly and divides the air-currents entering through the front openings it and directs the same to the sides of the top, thereby preventing these currents from blowing rearwardly over the exit-opening a or entering the same. As this opening is arranged directly over the burner, strong air-currents blowing across said opening or into the same would materially aflect the steadiness and illuminating capacity of the flame. The internal deflector it protects the exit-opening from such air-currents and directs the same to the outlet-openings in the side walls of the top, thereby increasing the outflow of air through these outlet-openings and causing the forcible ejection of the products of combustion and heated air from the lamp-body, thus improving the ventilation of the lamp.

The top plate f is preferably provided on its under side witha protecting-sheet 0, of asbestos.

I claim as my invention 1. The combination of a lamp-body having in its upper portion an exit-opening for the products of combustion, and a top or dome arranged upon said body and inclosing said exit-opening, said top or dome comprising a transverse front wall provided with air-inlets, longitudinal side walls provided with air-outlets and an imperforate transverse rear wall, substantially as set forth.

2. The combination of a lamp-body having in its upper portion an exit-opening for the products of combustion, and a top or dome arranged upon said body and inclosing said exit-opening, said top or dome comprising a transverse front wall provided with air-inlets and longitudinal side walls provided with airoutlets and having external deflectors extending from the front edges of said outlets rearwardly and outwardly, substantially as set forth.

3. The combination of a lamp-body having in its upper portion an exit-opening for the products of combustion, a top or dome arranged upon said body and inolosing said exitopening, said top or dome having air-inlets at the front and air-outlets at the sides, and an internal deflector arranged within said top or dome in front of said exit-opening, substantially as set forth.

4. The combination of a lamp-body having ERNEST CAMERON EVERETT.

Witnesses:

HENRY E. BENTZ, OSCAR R. WEISS. 

